This Soil Moisture Sensor is designed to provide users with ground moisture data based on the amount of conductivity detected across the sensor probes. The convenient I2C interface makes it easy to add moisture readings to any IoT application in seconds using our simple plug and play interface. This soil moisture sensor uses an ADC121C021 analog to digital converter with 12-bit resolution, providing ground moisture data values from 0 to 4095 based on conductivity. On-board address jumpers allow up to 8 water level sensors on a single I2C data bus. Integrated sensor strips make this sensor ideal for experimentation with remote monitoring of greenhouse gardening and farming applications. Chain this sensor together with NCD relay controllers for pump control applications, add a temperature and humidity sensor to the chain for environmental monitoring, or expand the chain to include many other types of sensors.

Because this sensor measures conductivity, sensor readings will vary based on the conductivity of the water detected. Users should plan to calculate soil moisture by comparing known dry and known wet readings from this sensor. The salinity of the soil will affect readings of this sensor.

All I2C Mini Modules are designed to operate at 5VDC. Using a convenient 4-Pin plug, devices can be daisy-chained onto the I2C Bus, eliminating the need for soldering. Simply plug together the devices you need for your next automation application. Pull-up resistors are included with all NCD master devices. If you are wiring in your own I2C port, onboard 4.7K jumper-selectable pull-up resistors are available for convenience purposes.

Use this water level sensor with Raspberry Pi, Arduino, Particle and much more. Connect to a PC using our USB to I2C converter interface. Be sure to check the compatibility section of this sensor for a complete list of supported hardware platforms. Not for use in outdoor applications.

What is the NCD I2C Interface?

NCD is the creator of plug and play modular hardware using the NCD I2C Interface connector standard. NCD I2C devices allow you to chain together several devices on the I2C bus and communicate to each device individually at high speed (subject to the limitations of I2C). The NCD I2C Interface uses a standard 4-Pin I2C Input and I2C Output connector. NCD I2C devices communicate 5V I2C data and provide 5V DC power through this connector. NCD I2C devices use standard I2C communications for all data transport, which is supported by nearly every microcontroller in production today. The NCD I2C Interface is strictly a 5V standard, which is ideal for transport across longer cables. NCD I2C devices always include a 6″ (152mm) 4-conductor I2C cable. NCD I2C Mini Modules always include a 3″ (76mm) 4-conductor I2C cable. Cables and connectors are available separately for designers who would like to include their own NCD I2C Interface into their designs.

Plug and Play Connectivity

NCD I2C devices will plug into any available NCD I2C Output. This includes just about everything we make in the NCD IoT Category, including all NCD IoT devices. We also manufacture a wide range of I2C adapters that make it easy to plug NCD I2C Devices directly into most computing platforms. The NCD I2C Interface adapters are available for Arduino, Banana Pi, BeagleBone, Bluz, C.H.I.P., ESP8266, Onion Omega, Particle Photon and Electron, PyCom, Raspberry Pi, 2, 3, and Zero, and Windows. We are always working to add new platform support for NCD I2C devices. NCD I2C Interface devices are compatible with just about everything in the microcontroller industry.

Unlimited I2C Expansion

Based on our plug-and-play I2C interface standard, all NCD I2C devices are equipped with an I2C output port, making it easy to expand to a wide variety of sensors, current monitors, relay controllers, PWM controllers, and much more! We are always designing new expansions for our modular plug-and-play I2C framework. We are dedicated to building a product line of interconnected devices to simplify all forms of automation. Re-use or upgrade your hardware in seconds by selecting the modules that best fit your needs, and chaining them together using the included I2C expansion cables!

Powering NCD I2C Interface Devices

Some NCD I2C devices require an external power supply, others may be powered through the 4-Pin I2C bus connector at 5VDC, and other devices are jumper selectable between external and I2C bus power. All I2C mini-modules are powered through the 5V I2C bus connector, greatly simplifying connectivity.

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